A nurse is caring for a client who reports xerostomia following radiation therapy to the mandible. Which of the following is an appropriate action by the nurse?

A. Providing humidified air can help relieve the dryness associated with xerostomia (dry mouth). B. Instructing on esophageal speech is unrelated to managing xerostomia. C. Offering saltine crackers between meals may worsen dry mouth by stimulating further saliva reduction. D. Alcohol-based mouthwashes can further dry out the oral mucosa and should be avoided.